Puller for primary cut-out plugs



March 30 1926.

1,579,020 -E. F. MINER v PULLERFOR PRIMARY CUTOUT PLUGS une 1925 F 'TW FLS,

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1 mm num Invent or:

El Isworth F." Miner, by

His Attor Patented Mai. so, was.

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T o all'whom itmdy concern: 7 Be it known that I, Ennswonrrr F. hlINER,'. a citizen of the United States, at Litchfield, in the county of Litchlield and State ofconnecticut, have invented certain new and useful Improvements in Pullers for Primary Gut-Out Plugs, otwhichjthe following is a'specification. I

The present invention relates to safety devices. for operating high potential electrical apparatus, and more especially to pullers for removing and replacing the plugs of pri mary cutouts. g

The object otmy invention is theprovision of an improved plug puller which may be positively'connected to the plug of a primary cutout with facility, which shall be strong and durable and composed of few and simple parts and whichshall be of low manufacturing cost. 7

Primary cutouts are fused safety devices employed on the high potential side of distribution transformers for lighting circuits usually mounted on poles out of doors and exposed to the weather. The supply potentials range "from twenty-three hundred to seventy-five hundred volts, and accordingly there 'lS'lHOlQ or less danger to humanlil'e in the interruption of the circuitby pulling out of a plug, especially during rainy weather. v In order that the lineman may. remain at a safe distance'from the cutout when it becomes necessary to remove the plug, it is common practice to provide plug pullers which consist of a relatively long pole of insulation having means at one end for coupling it to the plug. 'The plugs sometimes offer considerable resistance to 40 being removed, and when removed they' require to be held from falling to the ground, since they are usually made of porcelain and are easily broken by impact. One embodiment of the invention is shown ,in the accompanying drawing, in which Fig. 1 is a side elevation of an improved'plug puller with the parts in the relative posi-' tions for application to the knob of a plug; Fig. 2 is a similar view with the parts in their relative engaged posit-ions, and'Fig. 3 is an elevation at right angles tothe elevations otF igs. 1 and 2.

The pole 1 is a plain cylindrical wooden rod usually three to four leet in length and residing them the neck of ing movement.

1925. serial 1%. 349160;;

provided at oneend :witlrthe plug, engaging and holding means. I.

T N JOFF E The plug engagingf and holding ,means comprises 2. is a sheet metal secured against 'idisplacement" by 1ai=trans- 'verseTrivet or pin a slot like an inverted T vide a side opening .5 torthe-receptionof the knob 6 of .the plug and extending horns '7 adapted to receive betweenthe plug knob 6 and to engage at their lower edges with theupper surface of the knob. The

ing and retaining the-knob 6 in position between the engaging horns triangular guard plate provided at its lower end with a sleeve 8 freely swivel-ed upon the lower portion of the'hooked member 2 and having a 180 to receive one end slot 9 therein adapted which serves to prevent longitudinal displacement thereof and To connect my plate 3 is rotated to stand away i T slot in the hooked member 2 so latter may receive the-knob 6 therein,.as indicated inFig. 1. As the hooked member 2 moves into engaging relation, the guard plate 3 comes into contact with the edge of the elongatedfiange member 2 as the latter isrotated by the lineman into the holding position indicated in means 0' for hold-.

of the rivet or pin Al I a;hooked"member ,2 and a holding or.retainingmemberB; The hooked member cylinder with its lowerfiO end fitted like. a ferrule uponthe pole 1 and 4:, while'its upper end: has cut therein to pro-- two transversely I 7 consists of "to limit its swivel A so puller to a plug, the guard rom the t that the 10 ofthe plug so that it is prevented from'turning with the hooked i Fig. 2 in which the guard plate 3 stands opposite the T slot and serves until the plug has ing position and the guard plate by a swiveling movement member to the original position, as shown inFig.1.- in

While I have shown and described the best embodiment of the'invention known to me,

been returned to operat- I do not desire to be restricted thereto,

What I claim as new and desire to secure Letters Patent of the United States, is

1. A plug puller comprising a hooke member having provision forreceivingthe end of a plug sidewise therein, and a guard member swiveled relatively to the hooked I to prevent the I displacement of the knob 6 from the horns 7 displaced of the hooked" tive to th g in engagement with said hooked 2| 7 2. A plug pull-er comprising a hooked adapted to receive between vthem the end of a plug, and a guard member swiveledrelatively to said hooked member and adapted upon rotation of said hooked member} relative to the plug to be positioned opposite the space between said horns to retain the relative to said hooked plug in engagement therewith and to be moved into inoperative position.

3. A plug puller comprising; a hooked member provided with twov spaced trans verse horns adapted to receive between them the end of aplug, and a guard member mounted for limited swiveling movement member and adapted plug to reain member provided with two spaced horns 1 close the space between said horns movement ofsaid guard member. r In witness whereof, I have hereto set my l ke Hic position.

4. A plug p on N member having twospaced trans 3 and a guard member having a plate;

portedby a sleeve swiveled upon said t-ubhlar member 'andadapted in one position to and 111 another posltlon to free said space. .5. A plug puller comprising a tubular member having a T-shaped recess; a guard member having a triangular plate supported by a sleeve swiveled upon said tubularmemher, and means for limiting the swiveling hand this 28th day of May, 1925.

ELLSVVORTH F. MIN ER. 

